Industry Feedback
Fast Track Tennis spent a day at the USTA National Campus in Orlando and got 100% positive reviews from USTA staff. Even the CEO hit balls and used the app to measure shot speed, spin and landing position.
"Super clever that it only takes a handful of balls with no pickup!"
"Great tool to teach technique."
"Great product to practice at home with or could use as a station in classes."

A member of the USTA sport science committee gave the following comments: "Really like the device, great for practice, wish I had one in my garage or basement as a kid, would have worn it out! For physios, would be great to use in clinic as we don't have space to hit balls. We employ interval tennis programs for injured players and using low compression balls is a big part and particularly with low pre-impact ball velocities like this from the device would provide great space efficient methods for individuals to return after injury.  You can also do drills that incorporate movement based applications to optimize the device for exercise, coupled with heart rate monitoring to get the cardio benefit from tennis."